let myMultiLineString = "first line\nsecond line";
let myMultiLineTemplateLiteral = `first line
second line`; //注意此处的空格或者tab符
console.log(myMultiLineString);
// first line
// second line"
console.log(myMultiLineTemplateLiteral);
// first line
// second line
console.log(myMultiLineString === myMultiLineTemplateLiteral); // true
